CLAUDE_RUNNER_DEBUG_LOG_PATH
A Claude Code settings key, read out of the shipped bundle. It has been in the build since v2.1.309, including the newest one read.
The cloud session runner stops sending its debug log to the server on exit; copy it yourself from CLAUDE_RUNNER_DEBUG_LOG_PATH if needed
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.319.
In the changelogs
1Releases whose published page names CLAUDE_RUNNER_DEBUG_LOG_PATH.
-
v2.1.319
Cloud session runners no longer upload their debug log when they finish
The cloud session runner stops sending its debug log to the server on exit; copy it yourself from
CLAUDE_RUNNER_DEBUG_LOG_PATHif neededfound in this entry's text
First cited
1The earliest release whose published evidence quoted CLAUDE_RUNNER_DEBUG_LOG_PATH was v2.1.319, 6 Nov 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.
Presence across releases
5Build by build
10One row per release since the first build this name was read out of. Absent means the build was read and the name was not in it, never mined means no bundle for that release was ever archived, and a declared type or a default is only ever what that release's own bundle stated.
Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the settings key does. All settings keys.